Re: s390x: selftests/bpf are failing on CI

["Ihor Solodrai" <ihor.solodrai@linux.dev>]

On 4/1/25 8:53 AM, Vasily Gorbik wrote:
> On Tue, Apr 01, 2025 at 05:16:28PM +0200, iii wrote:
>> On 2025-04-01 10:06, iii wrote:
>>> On 2025-04-01 00:45, Ihor Solodrai wrote:
>>>> On 3/31/25 3:25 PM, iii wrote:
>>>>> On 2025-03-31 20:25, Ihor Solodrai wrote:
>>>>>> Hi Ilya,
>>>>>>
>>>>>> After recent merges from upstream, CI started failing both
>>>>>> on bpf and
>>>>>> bpf-next trees. Yonghong Song and Song Liu submitted a
>>>>>> couple of fixes
>>>>>> that are already applied to bpf tree, but there are still
>>>>>> failures on
>>>>>> s390x.
>>>>>>
>>>>>> https://github.com/kernel-patches/bpf/actions/runs/14163772245
>>>>>>
>>>>>> Could you please investigate?
>>>>>>
>>>>>> [...]
>>
>> I could not reproduce this on a s390x machine, so I downloaded the CI
>> artifacts and noticed that
>> /sys/kernel/debug/tracing/available_filter_functions is empty.
>> Turns out this is caused by cross-compilation.
>> I have let our kernel team (on Cc:) know and they will investigate this
>> further.
>
> There must be an endianness issue in the sorttable tool. Reverting just
> the commit fa1518875286 ("s390: Sort mcount locations at build time")
> fixes the issue. I'll take a look.

Hi Vasily.

I can confirm that reverting fa1518875286 fixes the selftests
failures. I added a revert commit as a CI-specific patch for now.

Please keep me in cc.

Thank you for the help!